/api/v1/brand/55/pod/1/seriesdata/?format=json&username=your_username&api_key=your_apikey&enddate=2011-05-31&startdate=2011-05-01&graph=highcharts&fields=followers

example.seriesdata.json

[
   {
      "data":[
         [
            1305694800000,
            3
         ],
         [
            1305781200000,
            4
         ],
         [
            1305867600000,
            5
         ],
         [
            1305954000000,
            6
         ],
         [
            1306040400000,
            7
         ],
         [
            1306126800000,
            17
         ],
         [
            1306126800000,
            17
         ],
         [
            1306213200000,
            27
         ],
         [
            1306299600000,
            37
         ],
         [
            1306386000000,
            27
         ]
      ],
      "name":"followers"
   }
]